Perlecan is required for FGF-2 signaling in the neural stem cell niche.

Perlecan is required for FGF-2 signaling in the neural stem cell niche.
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DOI:
10.1016/j.scr.2013.12.009
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发表时间:
2014-03
期刊:
影响因子:
1.2
通讯作者:
Arikawa-Hirasawa, Eri
Arikawa-Hirasawa, Eri
中科院分区:
医学4区
文献类型:
--
作者:
Kerever, Aurelien;Mercier, Frederic;Nonaka, Risa;de Vega, Susana;Oda, Yuka;Zalc, Bernard;Okada, Yohei;Hattori, Nobutaka;Yamada, Yoshihiko;Arikawa-Hirasawa, Eri

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在成人脑室下区(神经源性龛),神经干细胞双阳性的两个标志物的子集的神经干细胞在成人中枢神经系统,神经胶质细胞酸性蛋白和CD 133,在于接近fractones和血管基底膜,其中包含硫酸乙酰肝素蛋白聚糖串珠。在这里,我们证明串珠素缺乏减少了室管膜下区GFAP/CD 133阳性神经干细胞和整合到嗅球的新神经元的数量。我们还表明,FGF-2治疗诱导细胞周期蛋白D2的表达,通过激活Akt和Erk 1/2途径,并促进体外神经球的形成。然而,在没有串珠素的情况下,FGF-2不能促进神经球形成。这些结果表明,串珠素是调节FGF-2信号传导的神经原性小生境的组分,并通过促进神经干细胞自我更新和神经发生而起作用。
In the adult subventricular zone (neurogenic niche), neural stem cells double-positive for two markers of subsets of neural stem cells in the adult central nervous system, glial fibrillary acidic protein and CD133, lie in proximity to fractones and to blood vessel basement membranes, which contain the heparan sulfate proteoglycan perlecan. Here, we demonstrate that perlecan deficiency reduces the number of both GFAP/CD133-positive neural stem cells in the subventricular zone and new neurons integrating into the olfactory bulb. We also show that FGF-2 treatment induces the expression of cyclin D2 through the activation of the Akt and Erk1/2 pathways and promotes neurosphere formation in vitro. However, in the absence of perlecan, FGF-2 fails to promote neurosphere formation. These results suggest that perlecan is a component of the neurogenic niche that regulates FGF-2 signaling and acts by promoting neural stem cell self-renewal and neurogenesis.
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